The series, often titled on platforms like Sky , focuses on several critical themes:

: It details the massive exhumation project—one of the largest in criminal history—where hundreds of bodies were tested for drug residues years after their deaths.

More information. The Dark Shadow of Murder premiered on BBC Scotland on 1 September 2020. Screen Scotland Black Snow (TV Series 2022– ) - IMDb

: He committed these acts not out of a "mercy killing" impulse, but to create medical emergencies where he could then attempt to resuscitate the patients. He sought the thrill of being the "hero" in the eyes of his colleagues.

: A primary focus is how Högel was able to continue his killing spree for years despite suspicious spikes in death rates and resuscitation attempts during his shifts.